What are the effects of having holes in the ozone? The thinning is most pronounced in the polar regions, especially over Antarctica. Ozone depletion is a major environmental problem because it increases the amount of ultraviolet (UV) radiation that reaches Earth’s surface, which increases the rate of skin cancer, eye cataracts, and genetic and immune […]
How do you get rid of topsoil?
How do you get rid of topsoil? How to dispose of unwanted soil Use a waste clearance service. You could organise for a waste clearance service to come and collect your soil and garden waste. Hire a skip. For garden waste removal, you could also consider hiring a skip. Advertise locally. Use it for a […]
What is properties of mixtures?
What is properties of mixtures? General Properties of Mixtures Mixtures are made up of two or more substances that are not chemically combined with each other. The components of a mixture each keep their original properties. The separation of components can be easily done. The proportion of the components is variable. What is importance of […]
Can humans survive without sun?
Can humans survive without sun? Without the Sun’s rays, all photosynthesis on Earth would stop. While some inventive humans might be able to survive on a Sun-less Earth for several days, months, or even years, life without the Sun would eventually prove to be impossible to maintain on Earth. Is it bad to not get […]
What are the two main factors that pressure depends on?
What are the two main factors that pressure depends on? (1)It depends on force applied. (2)Area over in which force acts. The same force can produce different pressure depending upon area in which it acts. When the force acts over a large area,the pressure produced is less. What are the 2 factors on which effect […]
What is the correct voltage for a Ag Zn galvanic cell?
Why do skaters spin faster when they pull in their arms?
Why do skaters spin faster when they pull in their arms? Because angular momentum is conserved, the product of angular velocity and moment of inertia must remain constant. If you’re initially rotating with your arms outstretched, then when you draw your arms inward, your moment of inertia decreases. This means that your angular velocity must […]
Why do seatbelts fail?
Why do seatbelts fail? Here are some of the most common factors: Retractor failure – A seat belt retractor is where the belt feeds from and is responsible for locking up during sudden stops. If the retractor malfunctions for some reason, the passenger will not receive the protection needed to prevent serious injury during a […]
What are the three main fossil fuels?
What are the three main fossil fuels? Coal, crude oil, and natural gas are all considered fossil fuels because they were formed from the fossilized, buried remains of plants and animals that lived millions of years ago. Because of their origins, fossil fuels have a high carbon content. Are fossil fuels still being formed today? […]
Where did all the hydrogen come from?
Where did all the hydrogen come from? The low-mass elements, hydrogen and helium, were produced in the hot, dense conditions of the birth of the universe itself. The birth, life, and death of a star is described in terms of nuclear reactions. The chemical elements that make up the matter we observe throughout the universe […]